PID, APC

PID, APC November 1, 1998

Valve Survey Says, ‘Cost Less Important than Support’

Contestants on the show Family Feud won points and eventually prize money for correctly matching their answer to audience survey responses. The valve survey recently conducted by Control Engineering is less animated, but financial rewards for properly selecting, applying, using, and maintaining valves can be much greater than won on Family Feud.

By Staff
PID, APC November 1, 1998

Process Instrumentation’s ‘Utility Infielder’

This is the final installment of a five-part series on Process Sensing. Pressure sensing appeared in March. Smart sensors appeared in May. Other articles included temperature sensing (June) and flow measurement (September).It is probably safe to say that process automation has been applied in some way or another to every industry.

By Dick Johnson, Control Engineering
PID, APC November 1, 1998

PLC suppliers unbundle I/O and software

The global programmable logic controller (PLC) market will grow slightly during the next five years, according to a recent report, "PLC Worldwide Outlook," by Automation Research Corp. (ARC). Primary revenue growth will continue to come from unbundled I/O device and software sales, which have so far kept PLC suppliers out of the red as hardware revenues decline at a...

By Staff
PID, APC November 1, 1998

Control engineers are back in charge

Who makes the automation decisions in your company? Is it the plant manager, the control engineer, the process engineer, or the manufacturing engineer? Or is it the MIS department, the IT department, or even the ceo?A growing number of automation suppliers are telling us that more automation decisions are being made in the board room, at the highest levels of the company.

By Jane S. Gerold, Editorial Director
PID, APC November 1, 1998

Vision systems revealed

Automated vision systems are over 10 years old, but engineers are tapping recent technology advances find new applications. Often used with robots to find parts and orient tools, vision systems are also found where high-speed, accurate inspections are required along with data collection and networking.

By Gary A. Mintchell, Senior Editor
PID, APC October 1, 1998

Objects Make Software Behave Like Hardware

Objects—grouped-together packets of code—continue to improve control and human-machine interface (HMI) software for users. Using compatible objects:Objects also can replicate the look and feel of control systems hardware and appeal to control engineers with an affinity for icons.While objects have been used for years, widespread use of Microsoft (Redmond, Wa.

By Mark T. Hoske, CONTROL ENGINEERING
PID, APC October 1, 1998

Optimizing Processes with On-Line Infrared Monitoring

No matter what process variable to be measured, the ultimate purpose of implementing on-line process analysis is to improve performance and increase plant profitability. Real-time analytical information generated about a process with these systems can be used to improve yield, better manage process performance, and limit off-spec losses.

By Bruce McIntosh, Analect Instruments
PID, APC October 1, 1998

Pressure Regulators Simplicity May Suffice

Pressure regulators are very simple control devices, taking necessary operating energy from the process. In contrast, control valves require transmitters, controllers, and external energy sources.Value engineering strives to implement simple solutions that meet requirements. The simplicity of pressure regulators is reason enough to consider them.

By Dave Harrold, CONTROL ENGINEERING
PID, APC September 1, 1998

Flow Switch Features Easy Setup

Accurate setup is perhaps the most time consuming and tedious aspect of an instrument technician's job. Calibration requires that settings be checked against known conditions so that readings are meaningful to the process.In the case of an component like a flow switch, determining setpoints requires a technician to know limiting flow rates and pick devices accordingly.

By Dick Johnson, Control Engineering
PID, APC September 1, 1998

PID Inc. becomes Sequencia Corp.

Recognized for development of OpenBatch and EnterpriseBatch, PID's expertise has evolved beyond plant floor activities. Changing the name to Sequencia Corp. helps communicate a strategy to provide vertically integrated solutions from plant floor batch processes to popular enterprise resource planning systems.

By Staff